Notification Bar Disappeared

Hi,
The Notification Bar has worked successfully for over a year and it used to show on the entire site (as intended) but it suddenly disappeared a couple of months ago and it now only displays in WP Admin pages. I checked all the settings and everything looks correct and the same as it did when it was working. I don’t know what changed and I have tried everything.

The page I need help with: [log in to see the link]